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Finding the Fourth Proportional to 503,920.22, 695,410.86 and 274,476.79

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Solution

The fourth proportional to 503,920.22, 695,410.86 and 274,476.79 is: 378,778.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,920.22 : 695,410.86 = 274,476.79 : x
  2. Step 2: Convert to fraction form
    503,920.22/695,410.86 = 274,476.79/x
  3. Step 3: Cross multiply
    503,920.22x = 695,410.86 × 274,476.79
  4. Step 4: Simplify right side
    503,920.22x = 190,874,143,008.66
  5. Step 5: Solve for x
    x = 190,874,143,008.66/503,920.22
  6. Step 6: Final answer
    x = 378,778.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.